William m



(No Model.)

'- W. M. WILKIN. SAW SASH FORREOIPROOATING SAWMILLS. No. 338.,125. v 'Patented Ma'r. 16, 1886.

N. PLTERS, Fhulo-liihu npmr, Wnhinglon, D4C

UNITED STATES PATENT OFFICE.

\VILLIAM M. WILKIN, OF ERIE, PENNSYLVANIA.

SAW-SASH FOR REClPROCATlNG-SAW MILLS.

SPECIFICATION forming part of Letters Patent No. 338,125, dated March 16, 1886.

Application filed October 20, 1885. Serial No. 180,416.

To all whom it may concern:

Be it known that I, WILLIAM M. WILKIN, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylva nia, have invented certain new and useful Improvements in Saw-Sashes for Reciprocating- Saw Mills; and I do hereby declare the following to be a full, clear, and exact description of theinvention,such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to the construction of the saw-sash of reciprocating-saw mills; and it consists in forming the same of one piece of metal.

Heretof'ore the sawsash of reciprocatingsaw millssucl1, for example, as gang-mills have been formed of many parts bolted together.

My improvement in the construction thereof consists in forming the sash of one piece of metal, and thereby I produce a sash possessing the desiredstrength with much less metal, thus saving not only the metal, but-also lightening the load on the motor which drives the mill.

My construction also is much cheaper, as it not only saves metal, but also much labor and made of one piece of metal.

My device is illustrated in the accompany iug drawing by a single figure, which is a perspective view.

(No model.)

B marks the whole frame. I) is a vertical slot through the top girt of the frame, in which the saw-buckles of the saws are received. I) is a groove in the lower girt,which affords engagement for the lower saw-buckles which hook into it. b' I) are the guide-ribs on the sides of the sash, and b is the noddle-pin with which the connecting-rod engages.

The whole sash, as shown, is formed at one operation of casting. The slot 1) in the upper girt is formed by a core, and the noddle-pin may be cast in a chill or not, as desired. The guide-ribs Z) b" and the groove b are formed by the mold.

There is very little work required to finish the sash after it comes from the sand. The guide-ribs I) b have to be planed off. The top girt requires to be faced on top so as to give a square seat for the saw-buckles. The groove 1) has to be faced so as to give the hooks of the lower saw-buckles a square seat, and the nod- .dlepin, if not cast in a chill, must be finished. This is all the work that is required on the sash, and it is very much less than where the sash is made of parts.

What I claim as new is- 1. A gang-sawmill saw-sash consisting of vertical stiles and upper and lower girts with proper means for attaching the saws to said girts formed of one piece of metal, substantially as and for the purposes set forth.

2. A gang-saw-mill saw-sash having the slot I) vertically through its upper girt, the groove 1) forming a catch along the top of its lower girt, guide-ribs Z) I) on its sides, and the noddle-pin b", as shown, formed of one piece of metal.

In testimony whereof I afiix my signature in presence of two witnesses.

v \VILLIAM M. \VILKIN.

Vitncsses:

J NO. K. HALLOOK, R0131. H. PORTER. 

